Home / 21,928.64-30,264.11-12,976.14

Finding the Fourth Proportional to 21,928.64, 30,264.11 and 12,976.14

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Solution

The fourth proportional to 21,928.64, 30,264.11 and 12,976.14 is: 17,908.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.64 : 30,264.11 = 12,976.14 : x
  2. Step 2: Convert to fraction form
    21,928.64/30,264.11 = 12,976.14/x
  3. Step 3: Cross multiply
    21,928.64x = 30,264.11 × 12,976.14
  4. Step 4: Simplify right side
    21,928.64x = 392,711,263.45
  5. Step 5: Solve for x
    x = 392,711,263.45/21,928.64
  6. Step 6: Final answer
    x = 17,908.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.